CN216342819U - Compressor and refrigerating system - Google Patents

Abstract

The utility model discloses a compressor and a refrigerating system, wherein the compressor comprises a main shell, a liquid storage device, a compression unit and an air suction pipe group, the compression unit is accommodated in the main shell and is provided with an air suction hole, the air suction hole comprises a first air suction section and a second air suction section which are communicated with each other, and the diameter of the first air suction section is larger than that of the second air suction section; the air suction pipe group comprises a connecting pipe, an air suction pipe and a heat insulation pipe, one end of the connecting pipe is connected with the inner wall of the first air suction section and the other end of the connecting pipe is connected with the main shell body in a sealing mode, one end of the air suction pipe is connected with the liquid storage device and the other end of the air suction pipe is connected with the main shell body or the connecting pipe in a sealing mode, the inner wall of the air suction pipe is provided with a limiting portion, one end of the heat insulation pipe is connected with the inner wall of the second air suction section in a sealing mode, the other end of the heat insulation pipe is connected with the air suction pipe in an inserting mode and abutted against the limiting portion, and a gap is formed between the heat insulation pipe and the connecting pipe. On the basis of guaranteeing to have the space in order to guarantee thermal-insulated effect between thermal-insulated pipe and the connecting pipe, each part homoenergetic of inhaling the nest of tubes can obtain effectual fixed, and structural strength is higher.

Description

Compressor and refrigerating system

Technical Field

The utility model relates to the technical field of compressors, in particular to a compressor and a refrigerating system.

Background

The energy efficiency of the pump body of the compressor is mainly influenced by volumetric efficiency, indicating efficiency and mechanical efficiency, wherein heat transfer loss directly influences the volumetric efficiency and the indicating efficiency, and reducing the heat transfer loss is an effective way for improving the energy efficiency of the pump body. In the process of refrigeration cycle, high-temperature and high-pressure gas is in the main shell of the compressor, and the heat of the high-temperature gas in the compression unit wall, the main shell and the main shell is easily conducted to the gaseous refrigerant flowing in the suction pipe, so that the suction temperature of the compressor is higher than the evaporation temperature, and the problem of suction overheating is caused. In the correlation technique, can set up heat insulating tube intercommunication cylinder and reservoir, gaseous state refrigerant flows to the cylinder in from the reservoir through heat insulating tube, and heat insulating tube can the separation compress unit wall, main casing body and the heat-conduction of the high temperature gas in the main casing to gaseous state refrigerant, but the structural setting is reasonable inadequately, and structural strength is low.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a compressor, wherein all parts of a suction pipe group can be effectively fixed, and the structural strength is high.

The utility model also provides a refrigerating system comprising the compressor.

According to an embodiment of the first aspect of the present invention, a compressor includes: a main housing; a reservoir; the compression unit is accommodated in the main shell and provided with a suction hole, and the suction hole comprises a first suction section and a second suction section which are communicated with each other and have gradually reduced diameters; the air suction pipe group comprises a connecting pipe, an air suction pipe and a heat insulation pipe, wherein one end of the connecting pipe is connected with the inner wall of the first air suction section and the other end of the connecting pipe is connected with the main shell, one end of the air suction pipe is connected with the liquid storage device and the other end of the air suction pipe are connected with the main shell or the connecting pipe in a sealing mode, the inner wall of the air suction pipe is provided with a limiting part protruding inside the air suction pipe, one end of the heat insulation pipe is connected with the inner wall of the second air suction section in a sealing mode, the other end of the heat insulation pipe is connected with the air suction pipe in a butt joint mode with the limiting part, and a gap is formed between the outer wall of the heat insulation pipe and the inner wall of the connecting pipe.

The compressor according to the embodiment of the first aspect of the utility model has at least the following advantages:

in the group of pipes of breathing in, the both ends of connecting pipe are fixed in the inner wall and the main casing body of first section of breathing in respectively, the both ends of breathing in are fixed in reservoir and main casing body or connecting pipe respectively, it is spacing by the inner wall of second breathing pipe and the spacing portion in the breathing in respectively to insulate against heat the both ends of pipe, on guaranteeing to have the space between thermal-insulated pipe and the connecting pipe in order to guarantee the basis of thermal-insulated effect, each part homoenergetic of the group of pipes of breathing in can obtain effectual fixed, structural strength is higher.

According to some embodiments of the utility model, the inner wall of the air suction hole has a limiting surface, the limiting surface is located at one end of the second air suction segment far away from the first air suction segment, and one end of the heat insulation pipe abuts against the limiting surface.

According to some embodiments of the present invention, the main housing is provided with a flange extending to an outside of the main housing, one end of the connection pipe is hermetically connected to the flange, and one end of the air suction pipe is hermetically connected to the flange or the connection pipe.

According to some embodiments of the utility model, the connection pipe includes a sealing section and a first flange, the sealing section is connected to the inner wall of the first air suction section in a sealing manner, and the first flange is expanded along the radial direction of the connection pipe and is connected to the main shell in a sealing manner.

According to some embodiments of the utility model, the connecting tube further comprises a flared section having one end connected to the sealing section and the other end connected to the first flange, the flared section having an inner cavity diameter larger than the inner cavity diameter of the sealing section.

According to some embodiments of the utility model, the outer wall of the suction pipe is provided with a second flange that is flared in a radial direction of the suction pipe, the second flange being sealingly connected to the connection pipe or the main housing.

According to some embodiments of the present invention, the air suction pipe includes a pipe body and a flange, one end of the pipe body is connected to the reservoir and the other end is hermetically connected to the flange, and the second flange is disposed on an outer wall of the flange.

According to some embodiments of the utility model, there is a gap between an inner wall of at least a portion of the flange and an outer wall of the insulating tube.

According to some embodiments of the utility model, an end of the air suction pipe remote from the accumulator protrudes into an interior of the connection pipe.

The refrigeration system according to the second aspect of the utility model comprises the compressor provided by any one of the embodiments of the first aspect of the utility model.

The refrigeration system according to the embodiment of the second aspect of the utility model has at least the following advantages:

the compressor with higher structural strength is adopted, so that the safety and the reliability of the refrigerating system in use can be improved.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further described with reference to the following figures and examples, in which:

FIG. 1 is a schematic view of a compressor according to an embodiment of a first aspect of the present invention;

FIG. 2 is a schematic view of the compressor of FIG. 1 showing the compressor unit in cooperation with a suction tube set;

FIG. 3 is a partial schematic view of a compression unit of the compressor shown in FIG. 1;

FIG. 4 is a schematic view of a connecting pipe of the compressor shown in FIG. 1;

fig. 5 is an exploded view of the suction pipe of the compressor shown in fig. 1.

Reference numerals:

the suction pipe comprises a main shell 100, a flange 110, a liquid storage device 200, a compression unit 300, a suction hole 310, a first suction section 311, a second suction section 312, a limiting surface 313, a suction pipe group 400, a connecting pipe 410, a sealing section 411, a guide inclined surface 4111, a first flange 412, a flaring section 413, a suction pipe 420, a limiting part 421, a second flange 422, a pipe body 423, a flange 424 and a heat insulation pipe 430.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to, for example, the upper, lower, etc., is indicated based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, a plurality means two or more. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1, a compressor according to an embodiment of the present invention includes a main housing 100 and an accumulator 200, a compression unit 300 is installed in the main housing 100, the compression unit 300 may be a cylinder and a piston installed in the cylinder, a motor for driving the compression unit 300 is further installed in the main housing 100, and the motor drives the compression unit 300 to operate so as to compress a refrigerant sucked from the accumulator 200.

Referring to fig. 2, the compression unit 300 and the accumulator 200 are communicated with each other through the suction pipe group 400, the suction pipe group 400 is provided with a connection pipe 410, a suction pipe 420, and a heat insulation pipe 430, and the refrigerant gas in the accumulator 200 sequentially passes through the suction pipe 420 and the heat insulation pipe 430 and then enters the compression unit 300.

Referring to fig. 3, the compression unit 300 is provided with a suction hole 310, the suction hole 310 is a stepped hole, specifically, the suction hole 310 includes a first suction segment 311 and a second suction segment 312 which are sequentially communicated, wherein the diameter of the first suction segment 311 is greater than that of the second suction segment 312.

Referring to fig. 2, one end of the connection pipe 410 of the suction pipe assembly 400 is hermetically connected to the main casing 100, and the other end is hermetically connected to the inner wall of the first suction section 311, and the connection pipe 410 is used to isolate the high-temperature and high-pressure gas inside the main casing 100, the main casing 100 itself, and the casing of the compression unit 300 from the heat insulation pipe 430 inside the main casing 100, thereby reducing or even avoiding heat conduction from the high-temperature gas inside the main casing 100 and the gaseous refrigerant inside the heat insulation pipe 430 by the main casing 100. Both ends of connecting pipe 410 can both be effectual fixed, and structural strength is higher. It can be understood that, accessible welded mode sealing connection between connecting pipe 410 and main casing 100, accessible interference fit, welding, mode such as set up the sealing member carry out sealing connection between connecting pipe 410 and the inner wall of first section 311 of inhaling, adopt interference fit in this embodiment, interference fit's connected mode is comparatively simple, can improve assembly efficiency.

It can be understood that, referring to fig. 4, one end of the connection pipe 410 inserted into the first air suction section 311 may be provided with a guide inclined surface 4111, referring to fig. 2, when the connection pipe 410 is inserted into the first air suction section 311, the guide inclined surface 4111 may play a role in guiding, which may reduce the assembly difficulty, and make it easier for the connection pipe 410 to be inserted into the first air suction section 311. The wall thickness of the connection tube 410 may be set to 0.5mm to 1.2 mm.

Referring to fig. 2, the suction pipe 420 of the suction pipe group 400 has one end hermetically connected to the connection pipe 410 and the other end connected to the accumulator 200, and is used to transfer the gaseous refrigerant in the accumulator 200 to the insulation pipe 430. Both ends of the air suction pipe 420 can be effectively fixed, the structural strength is high, the inside of the air suction pipe 420 can be isolated from the outside, and external gas is prevented from leaking into the air suction pipe 420 or gaseous refrigerant in the air suction pipe 420 is prevented from leaking to the outside. It can be understood that an end of the suction pipe 420 remote from the accumulator 200 may also be hermetically connected to the main casing 100, and the outside may also be isolated from the inside of the suction pipe 420, so as to prevent external gas from leaking into the suction pipe 420 or prevent the gaseous refrigerant in the suction pipe 420 from leaking into the outside; the air suction pipe 420 and the connection pipe 410 or the air suction pipe 420 and the main casing 100 may be hermetically connected by welding.

The suction pipe 420 can be partially inserted into the connection pipe 410, during installation, a part of the suction pipe 420 is firstly inserted into the connection pipe 410, primary positioning of the suction pipe 420 and the connection pipe 410 is realized, then the suction pipe 420 is hermetically connected to the main shell 100 or the connection pipe 410, the installation process is convenient, and the structural strength of the plug-in connection part is high. The portion of the air suction pipe 420 inserted into the connection pipe 410 and the connection pipe 410 may be provided to be in a clearance fit, which can reduce the difficulty of assembly on the one hand, and can reduce the contact area of the connection pipe 410 and the air suction pipe 420 on the other hand, thereby reducing heat conduction.

Referring to fig. 2, the heat insulating pipe 430 of the suction pipe group 400 has one end hermetically connected to the inner wall of the second suction segment 312 and the other end inserted into the suction pipe 420, and it can be understood that the heat insulating pipe 430 is in circumferential contact with the inner wall of the suction pipe 420 to prevent the high temperature gas from leaking into the heat insulating pipe 430. The gaseous refrigerant enters the heat insulation pipe 430 through the air suction pipe 420 and then enters the compression unit 300, the heat insulation pipe 430 is made of heat insulation materials, and can be made of high polymer materials, so that the heat insulation effect is ensured, the heat conduction between a refrigerant flow path inside the air suction pipe group 400 and the outside is reduced and even isolated, and the phenomenon of air suction overheating is reduced and even avoided; the heat insulation pipe 430 is in clearance fit with the connecting pipe 410, the gap is filled with air, the heat conductivity of the air is low, and the heat insulation effect of the heat insulation pipe 430 can be further improved.

One end of the heat insulation pipe 430 is hermetically connected with the inner wall of the second air suction section 312, and can be connected in a manner of interference fit, welding, arrangement of a sealing element and the like, and no matter what sealing connection manner, the one end of the heat insulation pipe 430 can be limited in the axial direction of the heat insulation pipe 430, and it can be understood that the sealing connection manner in the embodiment is interference fit, the interference fit connection manner is simple, and the assembly efficiency can be improved; the other end of the heat insulation pipe 430 abuts against the limiting portion 421 in the air suction pipe 420, and the other end of the heat insulation pipe 430 can be limited in the axial direction of the heat insulation pipe 430, it can be understood that the limiting portion 421 can be provided as one or more protruding points protruding toward the inside of the air suction pipe 420, and it should be noted that, in the case of providing a plurality of protruding points, the plurality of protruding points can be uniformly distributed in the circumferential direction of the air suction pipe 420, so as to improve the stability of limiting the heat insulation pipe 430; an annular boss projecting inwardly of the air intake pipe 420 may be provided, or any other structure projecting inwardly of the air intake pipe 420 may be provided. Spacing portion 421 can set up to solitary part and connect in the inner wall of breathing pipe 420, also can with breathing pipe 420 integrated into one piece, adopts integrated into one piece's structure in this embodiment, and processing and assembly are all comparatively simple and convenient, can improve assembly efficiency. Through the above-mentioned spacing mode, the both ends of thermal-insulated pipe 430 all can obtain effectual fixed, and structural strength is higher.

It is understood that both ends of the insulating tube 430 may be chamfered to reduce the difficulty of assembling the insulating tube 430 into the second suction segment 312 and the insulating tube 430 into the suction duct 420. The wall thickness of the insulation tube 430 may be set to 0.7mm to 1.5 mm.

It can be understood that, in the above structure, the main casing 100, the connection pipe 410, the air suction pipe 420 and the air suction hole 310 of the compression unit 300 are cooperatively installed, so that the external environment, the interior of the main casing 100 and the gaseous refrigerant flow path can be isolated, the refrigerant can be prevented from leaking to the external environment or the interior of the main casing 100, and the gas in the external environment and the interior of the main casing 100 can be prevented from leaking to the gaseous refrigerant flow path; the heat insulation pipe 430 further prevents the heat of the main casing 100, the high-temperature gas inside the main casing 100, and the casing of the compression unit 300 from being conducted to the gaseous refrigerant inside the main casing, so that the phenomenon of overheating of the intake air can be reliably reduced or even avoided.

Referring to fig. 3, a limit surface 313 may be provided at one end of the second suction stage 312, which is away from the first suction stage 311, such that one end of the heat insulation pipe 430 abuts against the limit surface 313, thereby further increasing the limit of the heat insulation pipe 430 by the suction hole 310 and playing a role in mounting and positioning, specifically, when the heat insulation pipe 430 is mounted, the heat insulation pipe 430 is inserted into the second suction stage 312 until abutting against the limit surface 313, which indicates that the heat insulation pipe 430 is mounted in place.

Referring to fig. 2, the main housing 100 may be provided with a flange 110, the flange 110 protrudes to the outside of the main housing 100, the connection pipe 410 is hermetically connected to the flange 110, and the flange 110 can provide a connection position for the connection pipe 410, and compared with directly connecting the connection pipe 410 to the outer surface of the main housing 100, the connection pipe is connected to the flange 110 protruding from the main housing 100, the operation space is larger, and the connection operation is facilitated. The flange 110 may be provided as a structure separate from the main housing 100, or may be integrally formed with the main housing 100, in this embodiment, the flange 110 and the main housing 100 are integrally formed through a flange process, so that the structural strength is high, the step of connecting the flange 110 to the main housing 100 can be omitted, and the assembly process is simplified.

Referring to fig. 4, the connection pipe 410 may include a sealing section 411 and a first flange 412, which are connected to each other, and referring to fig. 2, the sealing section 411 is inserted into the first gas suction section 311 and is hermetically connected to an inner wall of the first gas suction section 311, the first flange 412 is hermetically connected to the main housing 100, and specifically, the first flange 412 may be hermetically connected to the flange 110, the first flange 412 is radially outwardly expanded along a radial direction of the connection pipe 410, and when being welded to the flange 110, a position of a weld is radially away from the heat insulation pipe 430, thereby preventing the heat generated during the welding process from damaging the heat insulation pipe 430. And, the side of the first flange 412 near the main housing 100 can abut against the flange 110 for easy installation and positioning. Further, since the first flange 412 is outwardly expanded in the radial direction of the connection pipe 410, the inner diameter of the flange 110 can be made large without considering the sealing problem at the flange 110, even if there is an installation error of the compression unit 300, an error of the installation position of the compression unit 300 can be tolerated by increasing the inner diameter of the flange 110, the first flange 412 outwardly expanded in the radial direction of the connection pipe 410 can seal the flange 110, and the bending deformation of the connection pipe 410 and the insulation pipe 430 due to the installation error of the compression unit 300 can be prevented.

Referring to fig. 4, a flared section 413 having a larger inner cavity diameter than that of the sealing section 411 may be further disposed between the sealing section 411 and the first flange 412, and referring to fig. 2, a larger gap is formed between the flared section 413 and the heat insulation pipe 430 than a gap between the sealing section 411 and the heat insulation pipe 430, that is, a larger gap is formed between the heat insulation pipe 430 and the connection pipe 410 in the vicinity of the main casing 100, so that heat conduction from the main casing 100 to the gaseous refrigerant in the heat insulation pipe 430 can be further reduced, and the phenomenon of compressor suction superheat can be further improved. It is understood that the sealing section 411, the flared section 413, and the first flange 412 may be integrally formed and may be manufactured by a single piece of tubing.

It can be understood that, a clearance fit can be adopted between the flared section 413 and the flange 110, which on one hand can facilitate the installation of the connecting pipe 410 to the main casing 100, and on the other hand can reduce the contact area between the connecting pipe 410 and the main casing 100, so as to reduce the heat conduction of the main casing 100 to the connecting pipe 410, further reduce the heat conduction to the gaseous refrigerant in the heat insulation pipe 430, and further improve the phenomenon of compressor suction overheating.

Referring to fig. 5, a second flange 422 may be provided on an outer wall of the air suction pipe 420, and referring to fig. 2, the second flange 422 is hermetically connected to the connection pipe 410, and more particularly, the second flange 422 is hermetically connected to the first flange 412, the second flange 422 is radially outwardly expanded along a radial direction of the air suction pipe 420, and when welded to the first flange 412, a weld position can be radially away from the heat insulation pipe 430, thereby preventing the heat generated during the welding process from damaging the heat insulation pipe 430. In addition, a side of the second flange 422 near the main housing 100 may abut against the first flange 412, facilitating installation and positioning. It will be appreciated that the second flange 422 may also be sealingly connected to the main housing 100, with the side of the second flange 422 adjacent the main housing 100 abutting the flange 110 when installed.

Referring to fig. 5, the suction pipe 420 may be a separate structure, and may be formed by two parts, namely a pipe body 423 and a flange 424, which are hermetically connected to each other and may be connected by welding. The flange 424 is provided with the second flange 422 on the outer wall, and compared with the integrally formed air suction pipe 420 which is provided with the second flange 422 and is provided with a split structure, the flange 424 is more convenient to process the second flange 422 separately. It can be understood that the position-limiting portion 421 should be disposed on the inner wall of the tube 423, one end of the heat insulation tube 430 is inserted into the tube 423 and is pressed against the position-limiting portion 421, and the heat insulation tube 430 should be in contact with the inner wall of the tube 423 in the circumferential direction to prevent the high-temperature gas from leaking into the heat insulation tube 430.

Referring to fig. 2, a gap is formed between the heat insulation pipe 430 and the inner wall of the partial flange 424, and the gap is filled with air, so that the heat conductivity of the air is low, and the heat insulation effect of the heat insulation pipe 430 can be further improved. It is understood that the remaining portion of the inner wall of the flange 424 may be connected to the portion of the tubular body 423 inserted inside the flange 424.

In a second aspect, the utility model provides a refrigeration system comprising a compressor as provided in the first aspect of the utility model. The compressor with higher structural strength is adopted, so that the safety and the reliability of the refrigerating system in use can be improved.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (10)

1. A compressor, characterized by comprising:

a main housing;

a reservoir;

the compression unit is accommodated in the main shell and provided with a suction hole, and the suction hole comprises a first suction section and a second suction section which are communicated with each other and have gradually reduced diameters;

the air suction pipe group comprises a connecting pipe, an air suction pipe and a heat insulation pipe, wherein one end of the connecting pipe is connected with the inner wall of the first air suction section and the other end of the connecting pipe is connected with the main shell, one end of the air suction pipe is connected with the liquid storage device and the other end of the air suction pipe are connected with the main shell or the connecting pipe in a sealing mode, the inner wall of the air suction pipe is provided with a limiting part protruding inside the air suction pipe, one end of the heat insulation pipe is connected with the inner wall of the second air suction section in a sealing mode, the other end of the heat insulation pipe is connected with the air suction pipe in a butt joint mode with the limiting part, and a gap is formed between the outer wall of the heat insulation pipe and the inner wall of the connecting pipe.

2. The compressor of claim 1, wherein an inner wall of the suction hole has a stopper surface at an end of the second suction segment remote from the first suction segment, and an end of the heat insulating tube abuts against the stopper surface.

3. The compressor of claim 1, wherein the main housing is provided with a flange extending outward of the main housing, one end of the connection pipe is hermetically connected to the flange, and one end of the suction pipe is hermetically connected to the flange or the connection pipe.

4. The compressor of claim 1, wherein the connecting tube includes a sealing section and a first flange that is radially outwardly expanded along the connecting tube, the sealing section is sealingly connected to an inner wall of the first suction section, and the first flange is sealingly connected to the main housing.

5. The compressor of claim 4, wherein the connecting tube further comprises a flared section having one end connected to the seal section and another end connected to the first flange, the flared section having an inner cavity diameter greater than an inner cavity diameter of the seal section.

6. The compressor of claim 1, wherein the outer wall of the suction pipe is provided with a second flange that is flared in a radial direction of the suction pipe, the second flange being sealingly connected to the connection pipe or the main casing.

7. The compressor of claim 6, wherein the suction pipe includes a pipe body and a flange, one end of the pipe body is connected to the accumulator and the other end is hermetically connected to the flange, and the second flange is disposed on an outer wall of the flange.

8. The compressor of claim 7, wherein at least a portion of the inner wall of the flange is spaced from the outer wall of the insulated pipe.

9. The compressor of claim 1, wherein an end of the suction pipe remote from the accumulator protrudes into an interior of the connection pipe.

10. Refrigeration system, characterized in that it comprises a compressor according to any one of claims 1 to 9.

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